This specification describes direct current (DC) power distribution systems. One of the systems includes a DC power distribution bus that includes a plurality of sector distribution buses. Each sector distribution bus is coupled to a respective sector power source. A plurality of sector isolation sw
This specification describes direct current (DC) power distribution systems. One of the systems includes a DC power distribution bus that includes a plurality of sector distribution buses. Each sector distribution bus is coupled to a respective sector power source. A plurality of sector isolation switches are coupled between the sector distribution buses and configured to individually isolate each sector distribution bus from the DC power distribution bus. At least one load is coupled to at least two different sector distribution buses of the DC power distribution bus.
대표청구항▼
1. A system comprising: a plurality of sectors, each sector comprising: a sector power source; anda sector distribution bus coupled to the sector power source, the sector distribution bus being configured to convey direct current (DC) power from the sector power source to one or more loads coupled t
1. A system comprising: a plurality of sectors, each sector comprising: a sector power source; anda sector distribution bus coupled to the sector power source, the sector distribution bus being configured to convey direct current (DC) power from the sector power source to one or more loads coupled to the sector distribution bus;a plurality of sector isolation switches coupled between the sector distribution buses and coupling the sector distribution buses, the coupled sector distribution buses providing a DC power distribution bus, the sector isolation switches being configured to individually isolate each sector distribution bus from the DC power distribution bus;wherein the sector power source for each sector uniquely corresponds to the sector distribution bus to which it is coupled and is not connected to the sector distribution bus thorough the sector isolation switches; andwherein: at least one load of the loads is coupled to at least two different sector distribution buses of the plurality of sectors;for each sector of the plurality of sectors, the sector distribution bus of the sector is coupled to respective first and second sector isolation switches of the sector isolation switches,the first sector isolation switch is coupled to a first other sector distribution bus of a first other sector and the second sector isolation switch is coupled to a second other sector distribution bus of a second other sector, so that opening both the first and second sector isolation switches isolates the sector distribution bus from the DC power distribution bus; andthe sector distribution bus of the sector is coupled to two adjacent sector distribution buses at two ends of the sector distribution bus through the first and second sector isolation switches for the sector distribution bus; and a number of the sector distribution buses is identical to a number of the sector isolation switches. 2. The system of claim 1, further comprising a control system configured to perform operations comprising: monitoring currents across each sector of the plurality of sectors;determining that a fault occurs at a particular sector; andin response to determining that the faults occurs at the particular sector, opening respective sector isolation switches for a particular sector distribution bus of the particular sector to isolate the particular sector distribution bus from the DC power distribution bus. 3. The system of claim 2, wherein the fault includes overcurrent, short circuit, or power outage, and determining that the fault occurs comprises determining a current in a particular sector is beyond a maximum threshold or below a minimum threshold. 4. The system of claim 1, wherein at least one sector power source of the plurality of sectors is coupled to a utility grid, and the at least one sector power source further comprises one or more backup generators for providing a total DC power substantially identical to a DC power provided by the at least one sector power source. 5. The system of claim 1, further comprising a control system configured to perform operations comprising: determining that a fault occurs at a first sector of the sectors; andin response to determining that the fault occurs at the first sector, opening respective section isolation switches for a first sector distribution bus of the first sector to isolate the first sector distribution bus from the DC power distribution bus, so that a particular load of the loads that is coupled to the first sector distribution bus and a second sector distribution bus of a second sector of the sectors draws DC power from the second sector distribution bus. 6. The system of claim 5, wherein a sector power source of the second sector comprises one or more back-up generators, and the operations further comprise: in response to determining that the fault occurs at the first sector, turning on the one or more back-up generators. 7. The system of claim 1, wherein the at least one load of the loads is coupled to each of the at least two different sector distribution buses through a set of respective diodes. 8. The system of claim 7, further comprising a breaker coupled between the load and the respective diodes for the sector distribution buses, the breaker being configured to perform operations comprising: determining that a current to the load is beyond a maximum threshold or below a minimum threshold; andin response to determining that the current to the load is beyond the maximum threshold or below the minimum threshold, isolating the load from the respective diodes and the at least two sector distribution buses. 9. The system of claim 1, wherein a particular sector of the plurality of sectors further comprises a converter coupled between a particular sector distribution bus of the particular sector and a particular load of the loads, the converter being configured to convert a higher voltage from the particular sector distribution bus to a lower voltage at an acceptable level for the particular load. 10. A method performed by a power distribution system comprising a plurality of sectors and a plurality of sector isolation switches, the method comprising: monitoring currents across each sector of the plurality of sectors, the sector comprising: a sector power source; anda sector distribution bus coupled to the sector power source, the sector distribution bus being configured to convey direct current (DC) power from the sector power source to one or more loads coupled to the sector distribution bus, the sector distribution bus being coupled to adjacent sector distribution buses through respective sector isolation switches of the plurality of sector isolation switches, the sector distribution buses of the plurality of sectors being coupled together to provide a DC power distribution bus;wherein: the sector power source for each sector uniquely corresponds to the sector distribution bus to which it is coupled and is not connected to the sector distribution bus thorough the sector isolation switches;for each sector of the plurality of sectors, the sector distribution bus of the sector is coupled to respective first and second sector isolation switches of the sector isolation switches,the first sector isolation switch is coupled to a first other sector distribution bus of a first other sector and the second sector isolation switch is coupled to a second other sector distribution bus of a second other sector, so that opening both the first and second sector isolation switches isolates the sector distribution bus from the DC power distribution bus;the sector distribution bus of the sector is coupled to two adjacent sector distribution buses at two ends of the sector distribution bus through the first and second sector isolation switches for the sector distribution bus; anda number of the sector distribution buses is identical to a number of the sector isolation switches;determining that a fault occurs at a first sector of the plurality of sectors; andin response to determining that the faults occurs at the first sector, opening respective sector isolation switches for the first sector distribution bus to isolate the first sector distribution bus from the DC power distribution bus, so that a particular load of the loads that is coupled to the first sector distribution bus and a second sector distribution bus of a second sector of the sectors draws power from the second sector distribution bus. 11. The method of claim 10, wherein the fault includes overcurrent, short circuit, or power outage, and determining that the fault occurs at the first sector comprises determining a current in the first sector is beyond a maximum threshold or below a minimum threshold. 12. The method of claim 10, wherein at least one sector power source of the plurality of sectors is coupled to a utility grid, and the at least one sector power source further comprises one or more backup generators for providing a total DC power substantially identical to a DC power provided by the at least one sector power source. 13. The method of claim 12, further comprising: in response to determining that a fault occurs at a first sector of the plurality of sectors, turning on the one or more back-up generators. 14. The method of claim 10, wherein the particular load is coupled to each of the first and second sector distribution buses through a set of respective diodes. 15. The method of claim 14, further comprising a breaker coupled between the particular load and the respective diodes for the first and second sector distribution buses, the breaker being configured to perform operations comprising: determining that a current to the particular load is beyond a predetermined threshold; andin response to determining that the current to the load is beyond the predetermined threshold, isolating the load from the respective diodes and the first and second sector distribution buses. 16. The method of claim 15, wherein the first sector further comprises a converter coupled between the breaker and the particular load, the converter being configured to convert a higher voltage from the first sector distribution bus to a lower voltage at an acceptable level for the particular load.
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